Nissolia
yellowhood
climbing, twining, or prostrate, pubescent to glabrate.
alternate, odd-pinnate;
stipules present, usually caducous;
petiolate;
leaflets 5(or 7), stipels absent, blade margins entire, surfaces puberulent, glabrate, or glabrous.
1–8-flowered, axillary, fascicles or racemes [panicles];
bracts present, stipulelike;
bracteoles usually absent.
papilionaceous;
calyx nearly actinomorphic, campanulate, lobes 5;
corolla yellow [white or purplish];
stamens 10, monadelphous, filament tube splitting adaxially at maturity;
anthers dorsifixed.
loments, stipitate, flattened, lanceoloid, segments breaking apart, individual ones indehiscent, pubescent, glabrate, or glabrescent;
segments 2–4, proximal 1–4 segments fertile, distal segment sterile, flat, winglike.
1–4, reddish brown, laterally compressed, reniform, sublustrous;
hilum relatively small, circular.
, perennial, herbaceous or ± woody, unarmed.
Nissolia
Species 14 (3 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Fruits with sterile segment 6–11 mm, fertile segments 7–10 mm; stems prostrate; leaf axis recurved; leaflets usually folded when dry. | N. wislizeni |
1. Fruits with sterile segment 10–30 mm, fertile segments 4–7 mm; stems climbing or twining; leaf axis ± straight; leaflets usually not folded when dry. | → 2 |
2. Corollas 14–20 mm; pedicels 9–11 mm; calyx tube 4.5–6 × 4–5 mm, lobes 1.5–4.5 mm; leaflets 5 or 7. | N. platycalyx |
2. Corollas (8–)10–12 mm; pedicels 5–7 mm; calyx tube (2–)3–4 × 2–3 mm, lobes 2–4 mm; leaflets 5. | N. schottii |
WildflowerSearch
iNaturalist
USDA Plants Database
